We found the following behavior in Intel MPI (5.0.3) using both the intel compilers and gcc: In an OpenMP-MPI environment, the performance of MPI_Comm_rank goes down if MPI is initialized using MPI_THREAD_MULTI
Thakur. R., Gropp, W.: Test suite for evaluating performance of MPI implementations that support MPI_THREAD_MULTIPLE. Technical Report ANL/MCS-P1418-0507, Mathematics and Computer Science Division, Argonne National Laboratory (May 2007)Thakur, R., Gropp, W.: Test Suite for Evaluating ...
We found the following behavior in Intel MPI (5.0.3) using both the intel compilers and gcc: In an OpenMP-MPI environment, the performance of MPI_Comm_rank goes down if MPI is initialized using MPI_THREAD_MULTIPLE. I attach two files to show the behavior. They can be compiled...
Thakur R, Gropp W (2007) Test suite for evaluating performance of MPI implemen- tations that support MPI THREAD MULTIPLE. In: PVM/MPI, pp 46-55THAKUR, R.; GROPP, W. Test Suite for Evaluating Performance of MPI Implementa- tions That Support MPI_THREAD_MULTIPLE. In: THE 14H EUROPEAN ...